Statement 1) Let us say revenue from all other items but calendars is 7x, then revenue from calendars becomes x.

We know x + 7x = 40000 , x = 5000.

Sufficient!!!

Statement 2) Sufficient as we can find the exact value.

Answer D.

In the first case we have proven that x > 1 as one solution.

Hope this helps!!!

Statement 1) (x+1)(|x|-1) > 0 We have two cases when 1)x > 0 , |x| = x (x+1)(|x|-1)>0 becomes (x+1)(x-1)>0 x^2 -1 > 0 i.e. x > 1 or x < -1 but we have assumed x > 0 so x > 1. 2) x < 0 , |x| = -x (x+1)(|x|-1)>0 becomes (x+1)(-x-1)>0 -(x + 1 )^2 > 0 i.e. (x + 1 )^2 < 0 but square of any number can nev...

You can use some numbers. 1)If A's income is r% more than B's ,then B's income is less than that of A by how much % ? Take A = 150, and r = 50% more than B = 100. Then B's income is less than that of A by (150 - 100)/150 = 33.33% 2)If P is current population of a town ,what would be it's population ...

Statement 1) 7 of the batters bat right handed but do not bat left handed. This will give us the total batters who are left handed only plus those who are both. i.e. 19 - 7 = 12. Sufficient!!! Statement 2) 4 of the batters bat both right handed and left handed. This just gives the overlap figure but...

Thanks Guerrero, that is the best way to solve these type of problems. But here in this case options allow me not to solve the question algebraically and we can answer in less than 30 seconds. Options:- a) (100xy - z)/(x+y) -- Not Possible as numerator is (hour^2 - hour), which is against the law of...

There is no need to do that because even after multiplication and then factorization as suggested by you the greatest prime factor will be 11 only. So, I don't see a point. E.g. Greatest prime factor of 1*2*3 is 3 or Greatest prime factor of 6 (which has 1,2,3,6 as factors) is also 3. Hope this make...